China will be the first country to crack down on Bitcoin.
It's trivial for them to block Bitcoin communications over their network, they have the most advanced proxy filtering systems in the world.
Bwahaha. Think about that and try again. Majority of the top network policy control/DPI hardware vendors are located in USA.
Just because they're not USING them doesn't mean USA don't have them... mostly they sell them to places like UAE, Saudi Arabia, but
you can be fairly certain that devices are at the ready in USA if needed...